Commit 99aedde0 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes: EFI fixes, an Intel Quark fix, an asm fix and an FPU
  handling fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu/xsaves: Fix improper uses of __ex_table
  x86/intel/quark: Select COMMON_CLK
  x86/asm/entry/64: Remove a bogus 'ret_from_fork' optimization
  firmware: dmi_scan: Fix dmi_len type
  efi/libstub: Fix boundary checking in efi_high_alloc()
  firmware: dmi_scan: Fix dmi scan to handle "End of Table" structure
parents 8a001af4 06c8173e
......@@ -499,6 +499,7 @@ config X86_INTEL_QUARK
depends on X86_IO_APIC
select IOSF_MBI
select INTEL_IMR
select COMMON_CLK
---help---
Select to include support for Quark X1000 SoC.
Say Y here if you have a Quark based system such as the Arduino
......
......@@ -82,18 +82,15 @@ static inline int xsave_state_booting(struct xsave_struct *fx, u64 mask)
if (boot_cpu_has(X86_FEATURE_XSAVES))
asm volatile("1:"XSAVES"\n\t"
"2:\n\t"
: : "D" (fx), "m" (*fx), "a" (lmask), "d" (hmask)
xstate_fault
: "D" (fx), "m" (*fx), "a" (lmask), "d" (hmask)
: "memory");
else
asm volatile("1:"XSAVE"\n\t"
"2:\n\t"
: : "D" (fx), "m" (*fx), "a" (lmask), "d" (hmask)
: "memory");
asm volatile(xstate_fault
: "0" (0)
xstate_fault
: "D" (fx), "m" (*fx), "a" (lmask), "d" (hmask)
: "memory");
return err;
}
......@@ -112,18 +109,15 @@ static inline int xrstor_state_booting(struct xsave_struct *fx, u64 mask)
if (boot_cpu_has(X86_FEATURE_XSAVES))
asm volatile("1:"XRSTORS"\n\t"
"2:\n\t"
: : "D" (fx), "m" (*fx), "a" (lmask), "d" (hmask)
xstate_fault
: "D" (fx), "m" (*fx), "a" (lmask), "d" (hmask)
: "memory");
else
asm volatile("1:"XRSTOR"\n\t"
"2:\n\t"
: : "D" (fx), "m" (*fx), "a" (lmask), "d" (hmask)
: "memory");
asm volatile(xstate_fault
: "0" (0)
xstate_fault
: "D" (fx), "m" (*fx), "a" (lmask), "d" (hmask)
: "memory");
return err;
}
......@@ -149,9 +143,9 @@ static inline int xsave_state(struct xsave_struct *fx, u64 mask)
*/
alternative_input_2(
"1:"XSAVE,
"1:"XSAVEOPT,
XSAVEOPT,
X86_FEATURE_XSAVEOPT,
"1:"XSAVES,
XSAVES,
X86_FEATURE_XSAVES,
[fx] "D" (fx), "a" (lmask), "d" (hmask) :
"memory");
......@@ -178,7 +172,7 @@ static inline int xrstor_state(struct xsave_struct *fx, u64 mask)
*/
alternative_input(
"1: " XRSTOR,
"1: " XRSTORS,
XRSTORS,
X86_FEATURE_XSAVES,
"D" (fx), "m" (*fx), "a" (lmask), "d" (hmask)
: "memory");
......
......@@ -269,11 +269,14 @@ ENTRY(ret_from_fork)
testl $3, CS-ARGOFFSET(%rsp) # from kernel_thread?
jz 1f
testl $_TIF_IA32, TI_flags(%rcx) # 32-bit compat task needs IRET
jnz int_ret_from_sys_call
RESTORE_TOP_OF_STACK %rdi, -ARGOFFSET
jmp ret_from_sys_call # go to the SYSRET fastpath
/*
* By the time we get here, we have no idea whether our pt_regs,
* ti flags, and ti status came from the 64-bit SYSCALL fast path,
* the slow path, or one of the ia32entry paths.
* Use int_ret_from_sys_call to return, since it can safely handle
* all of the above.
*/
jmp int_ret_from_sys_call
1:
subq $REST_SKIP, %rsp # leave space for volatiles
......
......@@ -78,7 +78,7 @@ static const char * __init dmi_string(const struct dmi_header *dm, u8 s)
* We have to be cautious here. We have seen BIOSes with DMI pointers
* pointing to completely the wrong place for example
*/
static void dmi_table(u8 *buf, int len, int num,
static void dmi_table(u8 *buf, u32 len, int num,
void (*decode)(const struct dmi_header *, void *),
void *private_data)
{
......@@ -92,12 +92,6 @@ static void dmi_table(u8 *buf, int len, int num,
while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) {
const struct dmi_header *dm = (const struct dmi_header *)data;
/*
* 7.45 End-of-Table (Type 127) [SMBIOS reference spec v3.0.0]
*/
if (dm->type == DMI_ENTRY_END_OF_TABLE)
break;
/*
* We want to know the total length (formatted area and
* strings) before decoding to make sure we won't run off the
......@@ -108,13 +102,20 @@ static void dmi_table(u8 *buf, int len, int num,
data++;
if (data - buf < len - 1)
decode(dm, private_data);
/*
* 7.45 End-of-Table (Type 127) [SMBIOS reference spec v3.0.0]
*/
if (dm->type == DMI_ENTRY_END_OF_TABLE)
break;
data += 2;
i++;
}
}
static phys_addr_t dmi_base;
static u16 dmi_len;
static u32 dmi_len;
static u16 dmi_num;
static int __init dmi_walk_early(void (*decode)(const struct dmi_header *,
......
......@@ -179,12 +179,12 @@ efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
start = desc->phys_addr;
end = start + desc->num_pages * (1UL << EFI_PAGE_SHIFT);
if ((start + size) > end || (start + size) > max)
continue;
if (end - size > max)
if (end > max)
end = max;
if ((start + size) > end)
continue;
if (round_down(end - size, align) < start)
continue;
......
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